Pre-Test Analyses for Pressurized Thermoshock Tests. Vessel I

摘要

The report describes the pre-test analyses performed for the thermoshock testswith the first model pressure vessel conducted at the Prometey Institute in Gatsina, U.S.S.R. The calculations were performed at the Nuclear Engineering Laboratory and at the Metals Laboratory of the Technical Research Centre of Finland. Mainly simplified calculation methods were used in the pre-test analyses. The temperature calculation was made using both a computer code based on the Fourier series and the finite-element method. As the next step the stresses due to internal pressure and thermal transient were calculated using both analytical formulas and the finite-element method. To evaluate the structural integrity, the VTTSIF program based on the influence function method was applied to obtain the stress intensity factor values, which were compared to material toughness values obtained from the Prometey Institute. The calculated temperatures and stresses are presented in the report. When these are compared to measured values, a good correlation is observed. (Copyright (c) Valtion teknillinen tutkimuskeskus (VTT) 1991.)